Katy Perry not ready to reveal all

She believes certain things should be kept between two people. "I didn't get too detailed about the specifics because I believe that's only supposed to be between the two people that are in it," thesun.co.uk quoted the 27-year-old as saying.

"I just wanted to encourage people, to let them know that it's okay if they have problems. It's okay if they're going through a situation, they don't have to lay down and die, they can get through it," Perry said. The documentary releases July 5.